I use stiff window plastic, taped to the machine platform, so that the quilt slides off at a slant toward the table, and put a shelf paper "cuff" around the fingers of each hand. I find that easier than pulling the machingers off and on to reposition. It's the flexible stuff that looks like little beads with holes between. Both ideas came from this board.
When I first got the Juki, I didn't sink it into the table because of the bobbin position, so it was very hard to move the quilt, even with the excellent (and smooth enough, so I thought) extended platform. I called the store, researched online, and tried everything I could think of. Finally, in despair, I appealed to the board, and several really experienced quilters reached out to help. I will always be grateful.
hugs,
Charlotte